Sheet-delivery mechanism for rotary printing-machines.



- H. M. BARBER. SHEET DELIVERY MECHANISM FOR ROTARY PRINTING MAC'HINES.

I Patented July 27, 1915.

2 SHEETS-SHEET 1.

APPLICATION FJLED OCT. 3. I912.

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H. M. BARBER. I SHEET-DELIVERY MECHANISM FOR ROTARY PRINTING MACHINES,

APPLICATlON HLED 0CT.3.1912.

Patented July 2? 2 SHEETSSHEET 2.

HOWARD M. BARBER, OF STONINGTON, CQN

MEETS, T0 (1?. B. COTTBELL 6t SENS GGMPANY, OF NEW 0:? DELAWABE.

NECTIGUT, ASSIGNOR, BY MESNE ASSIGN- YORK, N. Y., A'GOEPORATION i SHEET-DELIVERY MECHANISM FOR ROTARY PRINTING-MACHINES.

Specification of Letters Patent.

Patented uly 2?, 1915 Application filed October 3, 1912. Serial No. 723,730.

To (zZZ whom it may concern: le it known that I, Bowman M. BARBER, a citizen of the United States, and resident of Stonin rton, in the county of New London and State. of Connecticut, have invented new and useful Improvements in Sheet-Delivery lilechanisin for Rotary lh-inting-Machines, of which the following is a specification.

This invention comprises certain improvements in the construction, formfarrange ment and operation of the several parts of a sheet delivery mechanism for rotary printing machines whereby sheets of various lengths may be accurately delivered to a undetermined point. in the accompanying; drawings, the invention shown in connection with a two revolution rotary cylinder printing machine.

Figure 1 represents in side elevation portions a two revolution rotary cylinder printing machine having my improved delivery mechanism applied thereto, Fig. 2 I is a detail plan view partly in section along one side of the delivery mechanism to illustrate the position laterally of the machine of the cams for controlling the operation of the sheet delivery grippers, and Fig, 3 is a longitudinal vertical section through the delivery mechanism and. its adjacent parts. The cylinder is denoted by 1 and its impression cylinder loy 2. The form cylin-vder 1 is driven 'rom the drive shaft 3,, through the gears i and 5 and the impression cy inder '2 driven from the formcylindcr Il thr imizh the gears 6 and 7. The cam shaft 8 is driven from the form cylinder 1 through the gears 9 and 10. The-sheet receiving table .1 may he raised and lowered. i by any suitable means. Y .An endless delivery carrier and anend less tape carrier are provided for conveying the sheets from the printing and impression cylinders to the receiving table 11.

The side chains 12 of the endless delivery carrier pass around S,')1O(l(8t$ 13, let, the receiving and delivery ends of the carrier. The shaft 15 on which the sprockets 14 are mounted is driven from the drive shaft 3 through the spur gears 1, I6, bevel gears 17,18, shaft 19, 1 bevel gears 20, 21, shaft 22 and bevel gears '23, 2%. The ratio of this train of gearing is such that the endless delivery carrier is ery carrier.

the delivery carrier.

' receiving end difijtli'e end of the siiid tape. carrier.

4:0 are located at the room The means for adj "through elongated drivennt a slower speed than the surface speed of the printing and impression cylinders. This endless delivery carrier is provided with one or more sets of grippers. In the present instance, three sets of grippers are shown arranged to receive and deliver the sheets as the grippers are moved outw wardly along the under side of the deliv- Each pair pf grippers co nprises a stationary jaw "555 and a movable jaw 26 mounted on bars 27 and 28, which I bars are attached to the side chains 12 of Means are provided forfeeding the sheets from the impression cylinder 2 to the endless delivery carrier grippers as follows:. The tapes 29 of an endless tape carrier pass around pulleysv Ed, on the shaft 31 at the 70.

tape fcarrier and around" pulleys 32,011 the shaft 33 at the delivery 1 This 7 shaft 33. is driven from the spur gear "16 through the chain of gears 34, 35, 36, 37, 38., The ratio of this trainv of gearing is such that the endless tape carrier is driven at the sur- 'face'speed of the printing and impressioncylinders. Sheet forwarding rolls 39 and 'ving endbf the 8( tape carrier and are positively driven from the gear 41 on the shaft of the impression gearl2 through. tlietrain of goals ,%1*, 42, iii, The-rollers 44 have theiugeary la") driven from the gear 41 and are, arrangdd to coa'ct with the form cylinder? for delivering the 1 sheets onto the stripper fingers 46.

A receiving cam isprovided, which cam has a fixed -m einber 47. for controlling the opening ofthe grippers to receive the sheets and an adjustable member 48 for controlling the closing of the grippers on the ad Vance edge of the sheet at the propertime. usting the oainlnember 48 with respect to the member, 447 v is herein 9:5 shown as comprising screw bolts 49 passing slots 50' in the member,- 47. The bar 28 t-OWlllCll the movable grippers are, fixed is provided with a rocking arm 51 arranged in the pla ne of the cam 10.0 47,418.. 7-. The movable jaws 26 are normally held closedby a sprin 52; A cam 53 is arranged at the delivery e d of the endless deliverv the releasing of the back edge of the sheet from the forwarding pulleys 39, 40.

From the above description, it will be seen that a very simple and effective means is employed for insuring the accurate delivery of sheets of various lengths from the printing and impression cylinders onto the sheet receiving table, without the use of a positive sheet feeding device interposed between the forwardingrolls and the grippers,

'as the release of the sheets from the for warding rolls can be accurately timed with respect to the closing'oi. thia pers onto the sheet.

What I claim is delivery grip- 1.1:; a sheet delivery apparatus for printing machines, a delivery device having grippers, means extending along beneath the delivery device for feeding; sheets to the grippers, fixed means controlling the opening of the grip ers to receive the sheets, ad justable means, controllingthe closing of the grippers at difierent points in their movement to engage the advance edges of sheets of various lengths, and means controlling the opening of the grippers to release, the

sheets.

2. in a sheet delivery apparatus for printing machines, a delivery device having grippers arrangedto travel. at a certain speed, means extending along beneath the delivery device, arranged to travel at higher speed for feedingsheets to the gripper-s, fixed means controlling the openingot the grippers to receive the sheets',"ad ustahle means controlling the closing of the grip-j pers at different points in their movement to engage the advance edges of sheets of.

various lengths, and means controlling th opening: of the grippersto release the sheets. 3. In a sheet delivery apparatus for mazes? ing machines, an endless delivery carrier having grippers thereon, arranged to travel at a certainspeed, an endless tape carrier extending; along beneath the deli very carrier,

arranged to travel at a higher speedfor feeding sheets to the grippers, fixed means con trolling the opening of the grippers to receive the sheets, adjustable means controlling the closing of the grippers at different points in their movement to engage the advance edges of sheets of various lengths, and means controlling the opening of the grippers to release the sheets.

In a sheet delivery apparatus for printing machines, printing and impression cylin ders arranged to travel at a certain speed, delivery device having grippers arranged to travel at a lower speed, means extending; along beneath the delivery device arranged to travel at the surface speed of the cylinders for feeding sheets to the grippers, fixed means controlling the opening of the grippers to receive the sheets, adjustable vmeans for controlling the closing of, the grippers at di'lierent points iii-their movement to engage the advance edges of sheets of various lengths and means controlling the opening of the grippers to release the sheets.

6. In a sheet delivery apparatus for printing machines, printing and impression cylindersarra'nged to travel 'at a certain speed, an endless delivery carrier having grippers thereon, arranged to travel at a lower speed, an endless tpe'carrier extending along heneath the delivery carrier, arranged to-travel at the surface speed of the. cylinders for feeding-sheets t0 the grippers, fixed means controlling the opening of the grippers to receive the sheets, adjustable means for con trolling the closing ofthe grippers at different points in their movement to receive the advance edges of sheets of various lengths and means controlling the opening,

. of the grippers to releasethe sheets.

7. in a sheet delivery apparatus'for printing machines, a delivery device having'grip pers, means extending along beneath the tie liver device for leedin "sheets to the r1 Jere a cam havinga fixed member controlling the opening of the grippers to receive the sheets,

printing inachines, an endless deliver-year rierhaving grippers thereon, an endlessv tape carrier extending along beneath the.

delivery carrier for feeding sheets to the grippers, fixed means'controlhng the opening of the gri 'ipers to receive the sheets, a.d--

jnstahle ineans controlling the closing of thegrippers at different pointsin their movement to engage the advance edges of sheets of various lengths, and means controlling the opening of the grippers to release the sheets.

' i. In a sheet deliveryapparatns for print and alonqitudinally adjust-able member codtrolling the closing of the grippers at diller ent points in their movement to engage the advance edges of: sheets or various lengths, and a cam controllin grippers torelease the sheets.

havin 'a fixed member controllin the 0 ion m t3 8, In a sheet delivery apparatus for printlng machines, a delivery device having; grippers arranged to travel. at a certain speed, nieansextendin along beneath the delivery device, arranged. to travel at a-higher speed forffeeding sheets tothe grippers, a cam ingot the grippers to receive the z a longitudinally ad ustable member g the opening of the ling the closing of the grippers at difierent points in their movement to engage the advance edges of sheets of various lengths, and a cam controlling the opening of the grippers to release the sheets.

9. In a sheet delivery apparatus for printing machines, an endless delivery carrier having grippers thereon, an endless tape carrier extending along beneath the delivery carrier for feeding sheets to the grippers, a cam having a fixed member controlling the opening of the grippers to receive the sheets, and an adjustable member controlling the closing of the grippers at ditlerent points in their movement to engage the advance edges of sheets of various lengths, and a cam controlling the opening of the grippers to release the sheets.

10. In a sheet delivery apparatus ing machines, an endless delivery carrier having grippers thereon, arranged to travel at a certain speed an endless tape carrier eX- tending along beneath the delivery carrier, arranged to travel at a higher speed for feeding sheets to the grippers, a cam having a fixed member controlling the opening of the grippers to receive the sheets, and an ad justable member controlling the closing of the grippers at different points in their movement to engage the advance edges of sheets of various lengths, and a cam controlling the opening of the grippers to release the sheets.

1.1. In a sheet delivery apparatus for printing machines, printing and in'ipression cylin ders arranged to"travel at a certain speed, a delivery device having grippers arranged 5 to tragvel at lower speed, means extending ,ing machines, printing and impression cylinders arranged to travel at a certain speed, an endless delivery carrier having grippers thereon, arranged to travel at a lower speed, an endless tape carrier extending along beat the surface speed of the cylinders for'feedmg sheets to the grippers, a cam having a fixed member controlling the open ng of the ppers to receive the sheets, and a. longitudmally adjustable member controlling the closing of the grippers at dl'llerent points in their movement to engage the advance edges of sheets of various lengths, and a cam controlling the opening of the grippers to release the sheets.

In testimony, that I claim the foregoing as my inventidn, I have signed my name in presence of two Witnesses, this first day of October, A. D. 1912.

HOWARD M. Brianna.

Witnesses A. R. STILLMAN.

E. M. GRANT.

1 neath the delivery carrier, arranged to travel for prmt- 

